# Performance Metrics & Hot Tier upgrade

> Improved Performance Metrics for Write and Read paths and upgrade to Hot Tier

Source: https://last9.io/changelog/performance-metrics-hot-tier-upgrade/

### 📈 Relevant performance metrics

We have revamped the cluster performance metrics with only the metrics that matter:

1.  Throughput - How many requests are received on the read/write path?
2.  Latency - P99 of the requests received on the read/write path
3.  Errors - How many requests resulted in 5xx on the read/write path?

This helps get a high-level overview of the Last9 read-write paths in real-time and from a trend exploration point of view.

### 🔥 6 months of storage for Hot Tier

All Hot tiers are now upgraded to 6 months of storage by default. Migration for existing clusters is already done.

We have a [community Discord](https://discord.com/invite/Q3p2EEucx9) to discuss all things about SREs. Do hop in if interested!